in reply to Re^2: get difference of two arrays
in thread get difference of two arrays

Or even 

undef @h{<$FA>};   # store the "good" ones
delete @h{<$QA>};  # remove the "bad" ones
@output = keys %h; # keep the remaining ones

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Re^4: get difference of two arrays
by RMGir (Prior) on Nov 14, 2013 at 14:07 UTC
    Good point! "undef @h..." wins the benchmarks once I add it in, and delete should also be very efficient.

    Mike
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